Air Flow Products 77141616 Transition Boot 14x16 16 Inch

Product Description

The AIR FLOW PRODUCTS 77141616 is a straight transition boot with flange, designed to connect square or rectangular duct openings to round collar ductwork in forced-air HVAC systems. Conforming to the 77F pattern, this fitting transitions a 14x16 inch rectangular opening to a 16 inch round collar. It is used when adapting trunk-line duct to branch runs or register boxes in residential and light commercial air distribution systems. HVAC sheet metal installers and mechanical contractors handle this type of fitting during duct fabrication and system installation.

This transition boot is suited for new construction and retrofit applications where a square-to-round connection is required at a supply or return air plenum, trunk duct, or air handler cabinet. The integrated flange simplifies attachment to duct board, sheet metal, or structural openings, reducing the need for additional fitting hardware. It is commonly specified in residential forced-air systems and light commercial ducted installations where a clean, secure duct-to-register transition is needed.

Key Features

• 77F straight transition pattern for square-to-round duct connections
• 14x16 inch rectangular opening transitions to a 16 inch round collar
• Integrated flange for secure attachment to duct openings and surfaces
• Straight profile maintains duct alignment without offset or angle
• Compatible with standard round collar duct fittings and flex duct connectors

Compatibility

Designed as an OEM-style replacement and new-installation fitting for residential and light commercial forced-air duct systems requiring a square-to-round transition at 14x16 inch rectangular openings with a 16 inch round collar.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal mechanics. Power down the air handling system at the disconnect before working on ductwork connections. Secure the flange to the duct board or sheet metal surface using appropriate fasteners and seal all joints with listed duct sealant or mastic in accordance with local mechanical codes. Flex duct or rigid round pipe should be connected to the 16 inch collar and secured with a draw band before system startup.

Technical Specifications

• Product Type: Straight Transition Boot with Flange
• Pattern: 77F Square to Round
• Rectangular Opening: 14x16 inches
• Round Collar Diameter: 16 inches

Standard Information

• Brand: AIR FLOW PRODUCTS
• Manufacturer Part Number: 77141616